Icon for a portion of a display screen



The FIGURE is a front view of an icon for a portion of a display screen showing our new design.

The broken line showing the portion of the display screen is for the purpose of illustrating environmental structure and forms not part of the claimed design. The broken lines showing various regions and the areas there within are for the purpose of illustrating unclaimed portions and form no part of the claimed design. 

The ornamental design for an icon for a portion of a display screen, as shown and described. 